Firefox Studies must be disabled.

Studies try out different features and ideas before they are released to all Firefox users. Testing beta software is not in the DoW user's mission.

Type "about:policies" in the browser address bar.

If "DisableFirefoxStudies" is not displayed under Policy Name or the Policy Value does not have a value of "true", this is a finding.

Windows group policy: 1. Open the group policy editor tool with "gpedit.msc". 2. Navigate to Policy Path: Computer Configuration\Administrative Templates\Mozilla\Firefox Policy Name: Disable Firefox Studies Policy State: Enabled

macOS "plist" file: <key>DisableFirefoxStudies</key> <true/>

Linux "policies.json" file: Add the following in the policies section: "DisableFirefoxStudies": true